Electrical separator



Q March 6, 1934. c, JACOBS 1,950,179

ELECTRICAL S EPARATOR Filed Aug. 12, 1931 QEZZE fig. 7

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wms iu wit) hgig j Patented Mar. 6, 1934 UNITED STATES PATENT OFFICE 4Claims.

This invention relates to new and useful improvements in separators forelectrical wires. It has especial reference to electrical separators forwires used in the construction of radio transmitter antennae.

A main object of the invention is to provide a simple, durable,economical efiicient separator especially for antennae lead-in wireswhich will maintain said lead-in wires a predetermined distance fromeach other.

A further object is to provide such a separator which will be capable ofquick and easy attachment to and dis-attachment from said wires and yetfirmly hold the wires in their proper relation 16 when in use.

Further and more specific objects, features and advantages will moreclearly appear from a consideration of the specification hereinaftertaken in connection with the accompanying drawing which forms part ofthe specification and which illustrates a present preferred form of theinvention.

The invention briefly has particular advantage in two-wire radiofrequency feed lines. In such frequencies the purpose is to balance outall voltage and amperage from the lead-in wires and place the usefulenergy in the flat top or radiating portion of the antenna. This permitsthe transmitting apparatus to be placed at great distances from theantenna itself, if necessary.

In such an arrangement it is of high advantage and very necessary thatthe two wires of the radio frequency feed line be kept at equal anduniform distance throughout their entire length. To this end theinvention provides a simple, economical and efiicient device which willbe connected at both ends to the respective wires to provide a firmcontact and yet to keep the wires definitely spaced. A number of theseseparators can be spaced at intervals along the wires.

It is, of course, understood that these separators can be employed inother constructions where it may be desirable to keep wires spaced apredetermined distance from each other.

The invention briefly contemplates a body of insulated material havingmeans at opposite ends to receive the wires and with adjustable clampingheads on the ends to press against the wires, said clamping heads beingpreferably longitudinally movable to clamp the wires and to releasethem. The heads when in operative position being fastened therein bytightening up on a couple of wing nuts. The device is composed of a veryfew simple parts which can be readily and economically manufactured andvery easily assembled and disassembled for replacement and repair. Theinvention in its broad form comprises a bar of insulating material withaxially adjustable clamping heads at its opposite ends. These heads aremounted on rods slidable longitudinally in bores in the ends of the barand these rods are connected adjustably to clamping screws whichthemselves are adjustable in slots to permit the adjustment of theclamping heads at variable distances from the ends of the bar asdesired.

The preferred present form of the invention is shown in the drawing ofwhich:

Fig. 1 is a plan view of the device;

Fig. 2 is an elevation of one of the end clamps with its supporting rod;

Fig. 3 is an end elevation of the clamp and rod;

Fig. 4 is a section taken on the line 44 of Fig. 1;

Fig. 5 is a section taken on the line 55 of Fig. 1;

Fig. 6 is an end elevation of the device; and

Fig. 7 is a semi-diagrammatic figure showing a preferred electricalcircuit in which the connector is advantageously employed.

As shown in Fig. 7 the fiat antenna 10 is provided with insulators 11and 12 and with feed Wires 13 and 14, respectively, connected to theflat antennae on opposite sides of the insulator 11. These feed wiresare connected to suitable indicating elements 15 and 16 and totransmitting apparatus diagrammatically indicated by the letter A. Inradio frequency circuits as expressed above it is desirable to maintainthese feed wires equi-distance from each other to balance out certainenergies in the system for the reasons mentioned.

To effect this definite spacing of the feed-in Wires I provide a bar ofinsulating material 17 having metal wire clamping heads 18 and 19 atopposite ends. These heads are supported on the rods 20 slidably inbores 21 in the bar 17. Near the ends of the rods 20 are providedapertures 22 through which clamping screws 23 extend. This clampingscrew is provided with a head 24 at one end and a wing nut 25 at theother and is adapted to be adjusted lengthwise of the bar by reason ofits slidability in a slot 26 formed in line with the end of the rod 20.The inner face of the clamping head 18 is provided with a wire receivinggroove 27 and a corresponding groove 28 is formed on the ends of the bar17 and registers therewith. Between these two grooves a Wire such asfeed in wires 13 and 14 may be received. This construction will permitthe feed in wires to be spaced insulatingly from each other and yetfirmly gripped. To apply the wires the wing nuts 25 are releasedpermitting the screw 23 to be slid in a given direction, in order toslide the rod 20 and move the head 18 away from the end of the bar thuspermitting the wire to be disposed in the grooves. The clamping head andthe rod are then moved in the opposite direction to press the headagainst the end of the bar whereupon the wing nut 25 is tightened, whichfastens the elements in this adjusted position. The same constructionand operation takes place with respect to the other wire at the oppositeend of the bar.

The bar may be made of any suitable material preferably non-conducting,such as hard rubber or bakelite. By providing the slot 26 it is possiblefor the clamping head to be adjusted not only to release the wires andto permit their insertion, but to enable wires of different thicknessesto be employed.

It will be perceived that this device is simple in construction,economical to manufacture, and one which can be very quickly and easilyapplied to the circuit wires. t is understood, of course, that otherwires than those indicated in Fig. '7 can be properly spaced by using myde vice, but the application shown is one in which the use of my deviceis of high advantage.

The device is simple, compact and will stand considerable use withoutreadjustment or repairs.

While the invention has been described in detail and with respect to apresent preferred form thereof it is not to be limited to such detailsand forms since many changes and modifications may be made in theinvention without departing from the spirit and scope of the inventionin its broadest aspects. Hence it is desired to cover any and all formsand modifications of the invention which may come within the language orscope of any one or more of the appended claims.

What is claimed, is:

1. An electrical separator comprising a bar of insulating materialhaving wire receiving grooves in opposite ends thereof, wire clampingheads disposed in abutting relation against the opposite ends of saidbar and having recessed wire receiving grooves therein, rods slidable inbores in said bar and supporting said heads and adjustable clampingscrews engageable with said rods to adjust the position of said headswith respect to the ends of the bar, said clamping screws beingadjustable along the length of the bar.

An electrical separator which comprises a bar of insulating materialhaving wire receiving grooves in opposite ends thereof, metallic wireclamping heads abuttingly disposed against opposite ends of the bar,said heads having wire receiving grooves in alignment with the firstmentioned grooves, rods fastened to said heads and slidable in bores insaid bar, said bar having transverse slots therein uncovering the innerends of said rods, and clamping screws adjustably disposed in said slotand engageable with the ends of said rods to clamp said rods in anadjusted position whereby the heads may be adjusted and fixed, asdesired.

3. An electrical separator which comprises a bar of insulating material,clamping heads disposed in abutting relation against each end of thebar, rods slidably extending from said heads into bores in the bar,fastening elements on the inner ends of the rods adapted to engage withthe bar to clamp the rods in desired positions in the bores, theconstruction of the bar permitting the movement of the fasteningelements with the rods to predetermined desired clamping positionswhereby the heads may be adjusted with respect to the ends of the bar togrip a wire between the ends of the bar and the respective heads.

4. An electrical separator which comprises a bar of insulating material,clamping heads disposed in abutting relation against the ends of saidbar, rods slidably extending from said heads into bores of the bar,fastening elements on the bar extending transversely thereof andengageable with said rods, said rods being adjustable in the bores topermit the adjustment of the heads with respect to the end of the bar togrip a wire therebetween, said fastening elements being adjustable alongthe length of the bar.

CHARLES F. JACOBS.

